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math-word problem

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In 1992, the life expectancy of males in a certain country was 73.5 years. In 1996, it was 75.7 years. Let E representthe life expectancy in yeart and let t represent number of years since 1992.

Fill in the linear function E(t) that fits the data

uses this to prdict the life expectancy of males in 2009


To find the slope would it then be 75.7-73.5/73.5
so the slope would be 33.4? or would it just be 2.2?

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